Introduce a complete set of journal components including:
- JournalPanel: main container with mobile/desktop support
- ConnectionBar: MQTT connection and session management
- StreamView and StreamMessage: message log and individual message cards
- ComposePanel: message composition with type selection
- DynamicForm: recursive form generator based on Zod schemas
Implement a robust journal system featuring a type-safe message
registry and an MQTT-backed stream store.
- Add `registry.ts` to manage message type definitions, Zod schemas,
and custom reducers.
- Implement `journalStream.ts` to manage MQTT connections, session
lifecycle, and reactive message state.
- Add built-in message types for `narrative`, `intent`, `roll`,
and `article`.
- Provide utilities for message validation, optimistic local updates,
and message reversion.
hypercross